Cluster lamp-socket.



0. D. GEBVIN.

CLUSTER LAMP SOGKB'I.

nruorrxon nun un, 1o. nos.

manned Feb. 15, 1910.

m1, A anozwus y UNITED STATES PATENT OFFICE.

CHARLES D. GEBVIN, 0F NEW YORK, N. Y., ABSIGNOB T0 JOHN H. DALE, 0F NEW YORK, N. Y.

CLUSTER LAMP-SOCKET.

Ipeolacation ot Letten Patent.

Patented Feb. 15, 1910.

To ll whom it may concern:

Idle it known that I, CHAnLns Gauvin, a citizen of the United States, residing at New York, in the borough of Manhattan and Siate of New York, have invented certain new and useful Im rovements in Cluster Lamp-Sockets, of w ich the following is a full clear, and exact description.

y y invention relates to wireless clusters in which there is a lamp holding structure adapted to receive a plurality of amps, and

has for its obJect the provision of improved means for sup orting and applying current to said lam oldingstructure, said means permitting e lamp olding structur to be readily removed from or applied to is suport whereby the latter may be laced in he building when it is bein wire and the lamp-holding structure app ied later without the necessity of connecting any wires thereto, and whereb a shade having a centrai o ening of or inary size ma be applied o or removed from a sha e holder above the cluster without the necessity of disconnecting any wires therefrom.

With these ends in view m invention consists in the features herena r set forth and claimed.

In order that the invention may be more fully understood, reference is made to the accompanying drawing, of which- Figure 1 is a plan view of the lamp-holdin structure o a cluster, the supporting an current-applyin means being remove therefrom to expose he interior o the cluster; Fig. 2 is a section on line 2-2 of Fig. 1, showing the entire cluster in assembled form; Fig. 8 is 4a plan view of the sup orting and current-applying means; Fi is a bottom plan view of the same, and ig. 5 is a detai o erspective view of one the threaded ell 13;,

In the cluster shown the central conductor is in the form of a rigid ring 1 of circular cross-section, said ring being preferably of brass or other metal. This ring is drilled and tapped to receive the screws 8, of which there is one for each lamp socket and which are of metal and act as he center contacts and as means for securing the threaded in position. U n each of the screws and ,secnred by) t e head thereof is "'a wpslier 7, reifera 1y pf brass, a disk 6 of a, printA er insulating material, an insuigiing ,disk or .button 4, which may be of `shells exten porcelain or other suitable material, and a cup shaped threaded shell 5, the bottom of which is cut out to form a flexible tongue 8, and flanges 9. The flanges 9 are situated between the insulating disks 6 and 4 and the washer 7 is of greater diameter than the space between the said flan es. The parts being thus assembled upon tie screws 3, the latter is inserted within the bore 2 and screwed firmly into position thereby rigidi clamping to 'ether tie various parts which have been escribed. Any suitable means may be provided for electrically connecting the shel s 5, but in the cluster shown, the flexible tongues 8 are brought together at a central point and united by a metallic bushing 10 the ends of which are upset so as to bind the tongues tightly to ether. There is a cover 14, in the orm o a hemispherical shell, referably of brass, formed with openings hrouh which the several threaded V and insulatin bushings 18 of orcelain or other suitab e material are hreaded upon the exterior of the shells 5, and ,the ilanges formed on said bushings bear against the edges of the o enings in the cover and draw lie cover an threaded shells into a ri id structure.

The means or supporting and applying current to the lamp olding structure comrise a su porting base which consists of a anged p ate 19, adapted to be threaded upon the lower end of the conduit 12, through which the line wires 20 and 21 pass, and an insulating block or disk 22 of porcelain or other suitable material which is secured to said plate 19 in any suitable manner, as b screws 23 countersunk in said disl{.` The isk 22 is provided with a de pending portion 24, formed with a series Vof radial grooves 25, and secured within the said grooves by screws 26 are a plurality of spring tongues 27, of the form shown, said tongues being capable of yieldin laterally at their free ends so as to allow The ring 1 to pass the shoulders 28, formed in the said tongues, and occupy the bend formed in the ton ues immediately beyond said shoulders, as s own in Fi 2. By pulling downward on the lamp-ho ding structure, the ring 1 will bear against the shoulders 28 and cause the ton ues to bend inward suiciently to allow t` e ring to slip over the said shoul said lam -holding structure ders, whereby may be readily remove from its support.

The tongues 27 serve to sup ort the ring 1 and the parte carried there and one of the tongues vapplies current to said ring, being clamped upon a contact plate 29 by the screw 26. Said contact plate is provided with a binding screw for securing the end of the line wire 21. he other line wire 20 is secured to a contact plate 31, by a bindin screw 82, and said plate is secured tothe lock 22 by the screw 8B .which u lso secures a downwardly exten in s ring ton e 34 of the form shown. '.l e ower en of this tongue presses against the end of the bushing 10 and 4electrically connects the saine with the plate 81.

In order to cover the space between the cover 14 an the disk 22, an

is provided and the same rests upon a plurality of ins 15 secured to the cover 14. It should e noted .that the diameter of the disk 22 is substantially less than the diameter of the cover 14, so that a shade having an opening pf ordinary size may be passed over the disk 22 when the cover 14 and the parts carried thereby are removed, and secured to a shade holder applied to the pipe or conduit '12.

Having now described my invention, what I claim, is:

1. In a cluster socket, the combination. of a central rin -shaped conductor, insulatin means seeur thereto a plurality et radially extending threaded shells applied to hemispherical -annular plate said insulating mean a supportin base, and a luralit of yie din sprin ongues secu to sai base and a apted engage said ring to support the same.

2.' In a cluster socket, the combination of a supporting base, a plurality of yielding tongues dependmlge therefrom, a conducting ring adalpeted to applied to said tongues so as to pported t ereby, and a plurality of lamp-ho ding devices secured to said ring.

3. In a cluster socket, the combination of a supporting base, a plurality of sprin tongues depending therefrom and forme wit. supporting shoulders, and another spring ton e suptported by said base and insulated rom sai rst ton es and means for applyin current to said ongues.

4.v n a uster socket, the combination of a central conductor, insulating means secured thereto, a plurality of threaded shells applied to said insulating means, a supporting base, and a plurality of yielding tongues secured to sai base and adapted to engage saidconductor to support the same. n a .cluster socket, the combination of a supporting b ase, a plurality of yielding ton es depending therefrom, a central conduc or applied to said ton ues so as to be thereby, and a p urality of lamp supcporte Y ho ing devices` secured to said conductor.

6. -In a cluster socket, the combination of latter and apply current to sai `form of a lamp holding structure adapted to receive a plurality of amps, and a support therefor, one of said members being provided with a central conductor, and the other with n (plurality of yielding tongues having slioul ers adapted to interlock with said conductor.

7. In a cluster socket, the combination of a lamp holding structure adapted to receive a plurality of lamps, and a support therefor, one of said members being rovidcd with a rin conductor, and the ot ier with a plurality of yielding tongues havin shoulders adapted to en age said ring an lock said members toget er.

8. In a cluster socket, the combination with the lamp-holding structure comprising a ring conductor and a separate contact, the two being connected with the terminals of the different lamp sockets, of a supporting base, comprising a pluralit of sprin contacts electrically connecte to opposite sides of the supply circuit, one or more of the saine being adapted to engae said rin conductor for supporting t e lain -hol ing structure for connecting said con uctor with one side of the circuit, and another of the same being adapted to engage said separate contact.

`9. In a cluster socket, the combination with the lamp-holding structure coin rising a pair of contact members insulate from each other, one of the same being in the form of a ring and a plurality of lamp sockets electrically connected thereto, of a supporting base, and means carried thereby and adapted to yinterlock with the 'ring contact member to support the saine and apply current thereto by a movement of the lampholding structure in a straight line toward the su porting base.

.10. n a cluster socket, the combination with the lamp-holding structure com rising a pair of contact members insulate from each other, one of the same being in the form of a ring and a plurality of lamp sockets .electrically connected thereto, of a supporting base, and combined electrical an mechanical means carried thereby and ad a ted to interlock with the contacts of sai lamp-holding structure to su port the contact members by amovement of the lamp-holding structure in a straight line toward the supporting base.

In a cluster socket, the combination with .the lamp-holding structure coin rising a pair of contact members insulat from each other, one of the same being in the a ring and a plurality of lamp sockets electrically connected thereto, of a supportin base, and spring-actuated means carried tiereby and adapted to interlock with the contacts of said lam -liolding structure to sup ort the latter ons apply current to said con act members by a movement of f ring conductor and a se uralte contact, o

the lamp-holding structure in Va straight insulated from the first tongues, the said 1o line toward the supportingbase. ton ues coperating respectively with said 12. In a cluster socket,.the combination coniuctor and contact. with n lamp-holding structure comprising a In witness whereof, I subscribe my signaa ture, in the presence of two witnesses.

supportin buse, a p urality of sprin CHARLES D. GERVIN. ton es epending therefrom and forme Witnesses: wit supporting shoulders, and another WM. M. S'rocannmo,

spring tongue supported by said buse and FRANK S. Oman. 

